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Does the 2008 Toyota Sienna come equipped with a timing belt or a timing chain?

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4 answers

★ Top Answer
Joanne L.

In the 2008 Toyota Sienna, both the 4Cylinder and V6 engines use a timing belt whereas the engine itself utilizes a timing chain. This chain synchronizes the crankshaft and camshaft rotations, ensuring proper timing for the opening and closing of the engine's valves during each cylinder's firing. It's important to note that the chain is housed inside the engine and must be lubricated by the engine oil, underscoring the significance of oil maintenance. Essentially, the timing belt is a rubber component responsible for regulating the rotation of the camshaft and crankshaft, as well as controlling the valves that facilitate the ignition process by pushing the pistons down. Without the timing belt, the valves wouldn't function properly, resulting in the inability of the fuel to ignite and consequently preventing the car from operating.

More answers

  • Thad S.

    In 2008, the 3.5 V6 engine comes with a timing chain that does not require replacement at 100,000 miles, unlike belts that can break.

  • Francine J.

    Both the 4 cylinder and V6 engines in the 2008 Toyota Sienna models come equipped with timing belts.

  • Manuel M.

    It varies. The 2008 Toyota Sienna features a timing belt on both the 4-cylinder and V6 engines, while its engine utilizes a timing chain.

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